Enzymes in Ontogenesis (orthoptera): I. Tyrosinase

Authors

J. H. Bodine, State University of IowaFollow
E. J. Boell, State University of IowaFollow

Document Type

Research

Abstract

Variations in concentration of tyrosinase throughout the entire embryonic development of the grasshopper, Melanoplus differentialis, have been determined by measuring the oxygen uptake of the tyrosinase-tyrosine reaction with the Barcroft-Warburg apparatus. Tyrosinase activity of eggs at different developmental stages has thus been expressed as the amount of O₂ consumed per 100 minute interval at 25 ° C. in the oxidation of a given amount of tyrosine by the enzyme extracted (in phosphate buffer pH 8.0) from 20 eggs.

Publication Date

1935

Journal Title

Proceedings of the Iowa Academy of Science

Volume

42

Issue

1

First Page

210

Last Page

211

Copyright

©1935 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Recommended Citation

Bodine, J. H. and Boell, E. J. (1935) "Enzymes in Ontogenesis (orthoptera): I. Tyrosinase," Proceedings of the Iowa Academy of Science, 42(1), 210-211.
Available at: https://scholarworks.uni.edu/pias/vol42/iss1/102